5G communication system is a service-based architecture, providing a modular framework for meeting stringent latency and reliability requirements. Barely introducing AI technology in wireless network to solve a certain network optimization problem does not enable network self-optimization. Future communication is not only considered to apply AI to enhance the certain function, e.g., network energy saving, mobility management, load balancing, (which is being discussed in the 3GPP), but also is designed to integrate AI into every aspect of wireless communication system to depict vision of the intrinsic AI. Therefore, to bring autonomous learning, autonomous decision-making, self-optimization and self-evolution, in the furture, AI-Native radio network will be an intelligent loop, in which is intelligent data perception, intelligent modeling, AI-assisted architecture, and intelligent monitor.